2015 Chevy Express 2500 4.8L V8 351,400kms

2015 Chevy Express 2500 4.8L V8 ----351,400km's ----

Engine light is on (be a o2 sensor code) Inspected till 2024/June Just had a driver rear wheel bearing done few months ago. Has winter tires on it

I hear a little something something when I apply the brakes on the passenger rear (sound like pads) Side inner door latch doesn't work the greatest and the rust has made the door come right apart at the bottom :( Also various spots of rust . Nothing too serious